Clutch mechanism



Oct. 5 1926.

C. BRASSFIELD CLUTCH MECHANISM Filed March 18 1925 Fay l INVENTOR 6/000 Brassf/e/d ATTORNEY Patented Oct. 5, 192%. y I i i i 4 stares rarest orrica.

CI'AUD BRASSFI'ELD, OF SEATTLE. WASHINGTON, ASSIG-NOR OF (ENE-HALF TO- NELS GLANTZ, SEATTLE, WASHINGTON.

I CLUTCH nncnanisia.

Application filed March 18, 1925. Serial No. 16.305.

My invention has reference to improveposed concentrically with said opening, and ments in clutches, of the multiple dry disc which permits movement of the pins 10 variety, for motor vehicles, and its particular therein. object is the provision of an assembly of Located between the base and pressure 5 parts adapted to be quickly and convenplates is a pair of plates 13, flat and annular e0 iently installed in a well known make of in form, adapted to slidably engage the pins motor vehicle, said assembly taking the place 6 and revolve around the pins 10. Each of of the cone now utilized in the clutch mechasaid plates has riveted to either side a fricnism of said motor vehicle, and whereby the tion element consis ing of suitable brake lin- 10 cone clutch therein be converted into a ing material, preferably what is known in multiple dry disc clutch, with the advanthe art as a thermoid ring or one of Raytages incident to the use of such last-named bestos. The inner surface of the base plate clutch. is also provided with an annular section of In the accompanying drawing the same material, and likewise secured in Figure 1 is a view in longitudinal section place. Said friction element is generally deof the fly wheel of an engine and the device noted as 14:, and is located on each plate in complete as mounted in operative position, about the same relative position as indicated the clutch housing being partly broken away, in Fig. 2. In this connection, however, it and the crank and transmission shafts shown should be taken into consideration that the 20 in broken sections. diameter of the pressure plate is consider- Fig. 2, a vertical sectional view of the deably smaller than that of the base plate. The vice. crawn on the line 22, of Fig. 1. base plate 3, by virtue of its circular re- Fig. 3, the same, drawn on the line S3, of cessed portion 12, which permits it to revolve Fig. 1. with the y wheel. around the pins 10, and y 5 The device is adapted to be connected up the two annular plates 13, slidably mounted in operative position relative'to the crank on the pins 6 and adapted to also revolve shaft and the transmission shaft of such a, around the pins 10, constitute the driving motor vehicle without the necessity of fitting plates of the device. or machine work, the supporting connections An annular plate 15, smaller in size and of 0 for the cone clutch ordinarily provided with e S e diame er as t e pres ur pla e, i said motor vehicle serving as supports for disposed between the base plate and one of this new assembly or parts. the plates 13, and another plate of identical Referring more particularly to the drawconstruction, also designated as 15, is intering, 1 denotes the crank shaft and 2 the'fly posed between the plates 13. Said plates 15 35 wheel of the engine. In mounting the deare unlined, are slidably mounted on the vice in place, the male member of the cone pins 10, and obviously, through the recess12 clutch, with which the motor vehicle is origin the base plate and the fact that the outer inally provided, is first removed, and the circumferential portions of the plates are base plate 3, of a form as indicated in Fig. 1, located inwardly of the pins 6, have a moveas is secured to the fly wheel by the bolts 4, ment which is independent of the driving throughthe flange 5. As is evident, bolts plates. The pressure plate 7 and the plates must be provided which are longer than denoted 15, comprise the driven plates of the those first utilized in said automobile for sedevice.

curing the fly wheel to the flange. A plural- 2O denotes a casing, 21 a flange thereupon,

ity of laterally extending pins 6 are riveted to which is secured by the bolts 22, the transto the base plate and located adjacent its mission shaft coupling flange 23, which acouter edge. commodates the forward end of the trans: A pressure plate 7, formed as indicated in mission shaft 24; 25 the clutch collar, 26 the Fig. 1, is secured to the clutch hub 8 by the yoke support, 27 the clutch spring, and 28 50 oolts 9. A plurality of pins 10 are riveted to the clutch spring tension rod, all being a this plate, extend laterally in a direction oppart of the regular equipment of the motor posite to the pins 6, and are located adjacent vehicle, and adapted to perform in connect-he edge of a central circular opening, as intion with this device, their usual functions.

dicated by 11, in said plate. The base plate The device, after installation in a motor is provided with a recessed portion 12 disvehicle, obviously is actuated by the same mechanism already provided for the cone clutch in the original equipment. It affords in such a motor vehicle, without the necessity of changing any of the major supporting elements, a clutch having larger friction surfaces, and at the same time providing gradual engagement of the parts and quick disengagement thereof.

I claim:

A multiple dry disc clutch, comprising in combination with driving" means, including an engine fly wheel, and driven means, a base plate, rotatable with the fly wheel, having a plurality of laterally extending pins, and a recessed portion located adjacent to and concentric with its axis, a pair of annular plates in spaced relation slidably mounted on said pins, a pressure plate, rotatably connected with the driven means and in spaced relation with the base plate, having a plurality of laterally extending pins adapted to revolve in said recess, an annular plate slidably mounted on said last-named pins and disposed between the base plate and one of the firstnamed annular plates, a second annular plate slidably mounted on the last-named pins and disposed between the first-named pair of plates, a friction element fixedly secured to each side of the first-named pair of plates and to the inner surface of the base plate, and means for actuating; said clutch.

CLAUD BRASSFIELD. 

